Home / 10,916.40-15,076.26-8,554.80

Finding the Fourth Proportional to 10,916.40, 15,076.26 and 8,554.80

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Solution

The fourth proportional to 10,916.40, 15,076.26 and 8,554.80 is: 11,814.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.40 : 15,076.26 = 8,554.80 : x
  2. Step 2: Convert to fraction form
    10,916.40/15,076.26 = 8,554.80/x
  3. Step 3: Cross multiply
    10,916.40x = 15,076.26 × 8,554.80
  4. Step 4: Simplify right side
    10,916.40x = 128,974,389.05
  5. Step 5: Solve for x
    x = 128,974,389.05/10,916.40
  6. Step 6: Final answer
    x = 11,814.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.